Despite the best surgical efforts, complete removal of mesothelioma is possible in approximately 30% of the patients. When surgical removal is complete, chemotherapy followed by radiation therapy is recommended as an effort to improve control over the cancer and survival. This combination of treatments is called TRIMODALITY therapy. Unfortunately, the chances for the tumor coming back after TRIMODALITY therapy remains high. When surgical removal is not complete or not possible, some patients may receive chemo and/or radiation therapy to achieve control over the cancer, but the chances of tumor to growth again remains high and the chances of long term survival remains low.